Cost to Run a Window Air Conditioner in Washington
Washington's average residential electricity rate is 14.7¢/kWh as of July 2026 — the 13th cheapest in the country, 20% below the U.S. average. At typical usage (8 hours/day), a window air conditioner here costs $32.18 per month.
Per hour
$0.13
at 500–1,500 W
Per day
$1.06
8 hours/day
Per month
$32.18
219 kWh
Per year
$386
2,628 kWh
By usage level in Washington
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.53 | $16.09 | $193 |
| Typical (8 hrs/day) | $1.06 | $32.18 | $386 |
| Heavy (16 hrs/day) | $2.12 | $64.35 | $773 |
Washington vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a window air conditioner in Washington?
At Washington's current average residential rate of 14.7¢/kWh (July 2026), a window air conditioner with typical usage costs about $1.06 per day, $32.18 per month, or $386 per year.
Is running a window air conditioner in Washington more expensive than average?
No — it's cheaper. Washington's rate is about 20% below the U.S. average: $32.18 per month here versus $40.06 nationally.
What does electricity cost in Washington right now?
Washington residents pay an average of 14.7¢ per kWh as of July 2026 — the 13th cheapest rate of the 51 U.S. jurisdictions we track.